Amazon.com: MPF Products 993-000321 USB Programming/Charging Cable Replacement Compatible with Select Logitech Harmony 600, 650, 700, Ultimate & Ultimate One Remote Controls (Compatible Models Listed Below) : Electronics
Amazon.com: 6FT Cable for Logitech Harmony Remote Compatible with 600, 650, 700, Ultimate, Ultimate One, Touch & Elite for Data Transfer USB Programming sync : Electronics
Harmony 600 Universal Remote Control from Logitech - Quick Look - YouTube